package com.happypets.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 * Servlet Filter implementation class BackstageLoginFilter
 */
public class BackstageLoginFilter implements Filter {

    /**
     * Default constructor. 
     */
    public BackstageLoginFilter() {
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see Filter#destroy()
	 */
	public void destroy() {
		// TODO Auto-generated method stub
	}

	/**
	 * @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
	 */
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
		
		HttpServletRequest req = (HttpServletRequest) request;
		HttpServletResponse resp = (HttpServletResponse) response;
		
		HttpSession session = req.getSession();
		
		String url = req.getServletPath();
		System.out.println(req.getRequestURI()+"\n"+req.getLocalAddr()+"\nsession="+session.getAttribute("manager"));
		if(session.getAttribute("manager") == null && !url.contains("login")){
			req.getRequestDispatcher("login.html").forward(req, resp);
//			resp.sendRedirect("login.html");
		}else{
			chain.doFilter(request, response);
		}
		
		
	}

	/**
	 * @see Filter#init(FilterConfig)
	 */
	public void init(FilterConfig fConfig) throws ServletException {
		// TODO Auto-generated method stub
	}

}
